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		<title></title>
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			*{margin:0; padding:0;}
			div{
				width:500px; margin:0 auto;
				background:#ff0;
				text-align: center;	
			}
			span{
				display: inline-block;
				background: #d00;
				text-align: left;
			}
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	<body>
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			<span>块元素显示块元素显示块元素显示块元素显示块元素显示块元素显示块元素显示块元素显示块元素显示块元素显示：元素的内内一行。</span>
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	</body>
</html>
